Musselman, Vernon A.
Introduction to modern business : issues and environment
Prentice Hall of India, 1982
 Buku Teks
Musselman, Vernon A.
Introduction to modern business : analysis and interpretation
Prentice-Hal , 1969
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Bearden, James H.
The environment of business : perspectives and viewpoints
Holt, Rinehart and Winston , 1969
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Hastings, Paul G.
Introduction to business
McGraw-Hill, 1974
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Jucius, Michael J.
Introduction to business
Richard D. Irwin, 1961
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